You do indeed have an array of hashes (or rather an array of hash references), and to loop through them is actually quite easy: 
foreach my $var ( @{ $form->{PR} } ) {
    if ($var->{'id'} == $form->{'id'}) {
        print qq|elem->key $var->{id} eq $form->{"id"}\n|;
        print qq|\t\t cleared? $var->{cleared} $form->{"cleared"}\n|;
        if ( $var->{cleared} != $form->{"cleared"} ) {
            $var->{cleared} = $form->{"cleared"};
            print qq|\t\t FIXED $var->{cleared} $form->{"cleared"}\n|;
        }
    }
    else {
        print  qq|var id: $var->{id} ne form $form->{"id"}\n|;
    }
}

[download]
Output: 
var id: 10368 ne form 12594
var id: 12585 ne form 12594
var id: 12592 ne form 12594
elem->key 12594 eq 12594
         cleared? 0 1
         FIXED 1 1

[download]

In reply to Re: how to loop each anonymous hash in an array of hashes by tangent
in thread how to loop each anonymous hash in an array of hashes by aturtle

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